[Bug 1875459] Re: System hangs when loading google maps on chrome with navi AMD GPU

Well, I just updated to Groovy Gorilla and it's kernel version 5.8 fixen my issue.

But people sticking on LTS version 20.04 with same AMD GPU issue may
still be interested in a fix!

So, any chance for them to get an backport?

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Title:
System hangs when loading google maps on chrome with navi AMD GPU

Status in linux package in Ubuntu:
Confirmed

Bug description:
Since upgrading to 20.04 from 19.10 I can reliably hang my system by
loading Google Maps in Chrome and zooming in and out.

After turning on DRM debugging:

echo 0x1ff | sudo tee /sys/module/drm/parameters/debug

I can see the following message in the kernel log:

[16333.092468] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* ring gfx_0.0.0 timeout, signaled seq=2542114, emitted seq=2542116
[16333.092537] [drm:amdgpu_job_timedout [amdgpu]] *ERROR* Process information: process pid 0 thread pid 0
[16333.092540] [drm] GPU recovery disabled.

It seems to be this upstream bug:
https://gitlab.freedesktop.org/drm/amd/issues/892

I have two workarounds:

* Running Chrome with AMD_DEBUG=nongg fixes the issue on 5.4.0-26
* With the latest upstream kernel, 5.6.7-050607, Chrome can load google maps with no issues.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-26-generic 5.4.0-26.30
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: nicholas 5696 F.... pulseaudio
/dev/snd/controlC0: nicholas 5696 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 27 18:36:12 2020
InstallationDate: Installed on 2019-11-04 (174 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/BOOT/ubuntu_e02uh9@/vmlinuz-5.4.0-26-generic root=ZFS=rpool/ROOT/ubuntu_e02uh9 ro quiet splash vt.handoff=1
RelatedPackageVersions:
linux-restricted-modules-5.4.0-26-generic N/A
linux-backports-modules-5.4.0-26-generic N/A
linux-firmware 1.187
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-04-26 (0 days ago)
dmi.bios.date: 07/12/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.30
dmi.board.name: X570 Phantom Gaming 4
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.30:bd07/12/2019:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnX570PhantomGaming4:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.family: To Be Filled By O.E.M.
dmi.product.name: To Be Filled By O.E.M.
dmi.product.sku: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.

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